Catherine OHara Honors Martin Short Before His Passing

Catherine O'Hara makes a posthumous appearance in the upcoming documentary about the life of comedian Martin Short.

In a previously taped interview done before her death in January at age 71, O'Hara praised her longtime friend, saying, 'I feel like he could improvise to eternity. Couldn't he?'

The official trailer for the documentary, Marty, Life Is Short, dropped on Friday and showed the high-energy Short, 76, in multiple comedic forms spanning five decades.

The beloved Home Alone actress, whose on his podcast, appeared in a compilation of never-before-seen footage including a vintage clip of her dancing with Short.

Another dated video seemingly taken by Short showed the funny man playfully trying to squeeze her cheeks and exclaiming, 'I love you in Home Alone! You were wonderful!' as O'Hara laughed.

Next appeared a black-and-white photo of O'Hara and Short grouped with their co-stars of the acclaimed Canadian sketch comedy show SCTV (Second City Television) in the late 1970s and early 1980s.

O'Hara died on January 30 from a pulmonary embolism, a blood clot in the lungs triggered by rectal cancer, leaving her husband of 33 years, Bo Welch, 74, and their two sons, Matthew, 32, and Luke Welch, 28.

Marty, Life is Short, which premieres on May 12, was directed by Lawrence Kasdan, another pal from way back, and features a roster of other A-list friends and colleagues commenting on the comedian's talent and what he's meant to them in their lives.

Steve Martin, 80, who co-stars with Short in Only Murders in the Building, said at the beginning of the trailer, 'I’ll tell you something about Marty. Let's say you're going to host a dinner party, and you invite Marty, and then it turns out Marty can't come. You cancel the party.'

The beloved Home Alone actress appeared in a compilation of never-before-seen footage including a vintage clip of her dancing with Short